| Item | SPF | XML | Change | Description | IFC4x2 to IFC4x3_RC1 |
|---|---|---|---|---|
| IfcAlignment2DCantSegLine | ADDED |
An IfcAlignment2DCantSegLine is a straight line segment defined using the inherited attributes from IfcAlignment2DCantSegment. It is used as a segment in an alignment 2D cant profile.
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| IfcRepresentationItem | |||||
| LayerAssignment | IfcPresentationLayerAssignment @AssignedItems | S[0:1] | Assignment of the representation item to a single or multiple layer(s). The LayerAssignments can override a LayerAssignments of the IfcRepresentation it is used within the list of Items.
IFC2x3 CHANGE The inverse attribute LayerAssignments has been added. IFC4 CHANGE The inverse attribute LayerAssignment has been restricted to max 1. Upward compatibility for file based exchange is guaranteed. | X | |
| StyledByItem | IfcStyledItem @Item | S[0:1] | Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve.
IFC2x3 CHANGE The inverse attribute StyledByItem has been added. | X | |
| IfcGeometricRepresentationItem | |||||
| IfcAlignment2DSegment | |||||
| 1 | TangentialContinuity | IfcBoolean | ? | Connectivity between the continuous segments is not enforced per se to be tangential. Setting "TangentialContinuity" to True means that the current segment shall continue with tangential continuity to the previous one. | X |
| 2 | StartTag | IfcLabel | ? | Tag to annotate the start point of the alignment segment. | X |
| 3 | EndTag | IfcLabel | ? | Tag to annotate the end point of the alignment segment. | X |
| IfcAlignment2DCantSegment | |||||
| 4 | StartDistAlong | IfcPositiveLengthMeasure | Distance along the horizontal alignment, measured along the IfcAlignment2DHorizontal given in the length unit of the global IfcUnitAssignment. | X | |
| 5 | HorizontalLength | IfcPositiveLengthMeasure | Length measured as distance along the horizontal alignment of the segment. | X | |
| 6 | StartCantLeft | IfcLengthMeasure | Length measured for the left cant at the beginning of the segment. | X | |
| 7 | EndCantLeft | IfcLengthMeasure | ? | Length measured for the left cant at the end of the segment. | X |
| 8 | StartCantRight | IfcLengthMeasure | Length measured for the right cant at the beginning of the segment. | X | |
| 9 | EndCantRight | IfcLengthMeasure | ? | Length measured for the right cant at the end of the segment. | X |
| ToCant | IfcAlignment2DCant @Segments | S[1:1] | X | ||
| IfcAlignment2DCantSegLine | |||||
<xs:element name="IfcAlignment2DCantSegLine" type="ifc:IfcAlignment2DCantSegLine" substitutionGroup="ifc:IfcAlignment2DCantSegment" nillable="true"/>
<xs:complexType name="IfcAlignment2DCantSegLine">
<xs:complexContent>
<xs:extension base="ifc:IfcAlignment2DCantSegment"/>
</xs:complexContent>
</xs:complexType>
ENTITY IfcAlignment2DCantSegLine
SUBTYPE OF (IfcAlignment2DCantSegment);
END_ENTITY;
EXPRESS-G diagram
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